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6-5

IM WT5000-01EN

± ±

* In the measurement functions, rms, mn(mean), dc, rmn(r-mean), and ac are the delta computation modes.

A indicates the wiring unit.

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For information about equations, see appendix 1 in the Getting Started Guide, IM WT5000-03EN.

For information about the measurement period, see “Measurement Period.”

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Delta Computation Modes (ΔMeasure Mode)

You can select the voltage or current mode to be displayed as delta computation values from the following:

rms, mean, dc, r−mean, ac

• We recommend that you set the measurement range and scaling (VT/CT ratio and coefficients) of the

elements that are undergoing delta computation as closely as possible. Using different measurement

ranges or scaling causes the measurement resolutions of the sampled data to be different. This results in

errors.

• The numbers (1, 2, and 3) that are attached to delta computation measurement function symbols have no

relation to the element numbers. The computation of all delta measurement functions, from ΔU1 to ΔPΣ,

varies depending on the wiring system and the delta computation type. For details, see appendix 1 in the

Getting Started Guide, IM WT5000-03EN.

• When only one element is installed in this instrument, this feature cannot be used, and its settings do not

appear.

• Delta computation cannot be performed on a single-phase, two-wire (1P2W) wiring system.

6 Computation and Output

YOKOGAWA WT5000 Features Guide

Other manuals for YOKOGAWA WT5000